WO2021100961A1 - Dispositif de cylindre absorbant les chocs et cultivateur équipé d'une pluralité desdits dispositifs de cylindre absorbant les chocs - Google Patents

Dispositif de cylindre absorbant les chocs et cultivateur équipé d'une pluralité desdits dispositifs de cylindre absorbant les chocs Download PDF

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Publication number
WO2021100961A1
WO2021100961A1 PCT/KR2019/017426 KR2019017426W WO2021100961A1 WO 2021100961 A1 WO2021100961 A1 WO 2021100961A1 KR 2019017426 W KR2019017426 W KR 2019017426W WO 2021100961 A1 WO2021100961 A1 WO 2021100961A1
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Prior art keywords
section
cylinder device
cylinder
shock absorber
inner diameter
Prior art date
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PCT/KR2019/017426
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English (en)
Korean (ko)
Inventor
박기혁
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박기혁
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Publication of WO2021100961A1 publication Critical patent/WO2021100961A1/fr

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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B15/00—Elements, tools, or details of ploughs
    • A01B15/14—Frames
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B15/00—Elements, tools, or details of ploughs
    • A01B15/20—Special adjusting means for tools of ploughs drawn by, or mounted on tractors working on hillsides or slopes
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B3/00—Ploughs with fixed plough-shares
    • A01B3/24—Tractor-drawn ploughs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
    • F16F9/14—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
    • F16F9/16—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts
    • F16F9/18—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein
    • F16F9/19—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein with a single cylinder and of single-tube type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details

Definitions

  • the present invention relates to a buffer cylinder device for a cultivator, and in particular, a cultivator such as a tractor plow, a lift plow, a ridge plow, a clay pot, a subsoil crusher, etc.
  • a buffer cylinder device capable of maintaining and preventing damage to a cultivator by mitigating an impact upon collision with an obstacle such as a rock buried in the soil, and a cultivator having a plurality of the same.
  • plows are used to cultivate crops by digging up the soil using livestock such as horses or machinery, etc., and turning them over to make plows.
  • Conventional cultivators for tractors consist of multiple cultivators having a plurality of plows according to the size or horsepower of the tractor.
  • a tractor cultivator is provided with a number of plows up to 3 to 8 plows, and each plow is installed in a zigzag with respect to the main frame or in a main frame diagonally with respect to the traction direction.
  • a buffer cylinder device using hydraulic pressure was installed between the plow part and the main frame in order to buffer the collision occurring in the plow part.
  • the conventional buffer cylinder device of a conventional tillage machine has a problem in that its structure is complicated as a number of parts are installed therein, and does not play its role as a buffer cylinder device due to aging of internal parts when used for a long period of time.
  • the plow part must be kept inserted into the soil at a certain depth during cultivation, but the buffer cylinder device could not pressurize the plow part with a constant pressure even when the plow part did not collide with the rock due to aging of internal parts. .
  • smooth cultivation could not be achieved because the plow was inserted into a shallower depth than the required depth.
  • the buffer cylinder device of the cultivation machine prevents damage to the cultivation machine by mitigating the impact applied to the cultivation machine by an obstacle during cultivation, and reduces the inner diameter of the cylinder part. It is an object of the present invention to provide a buffer cylinder device for a cultivator capable of fundamentally blocking all problems caused by product aging by forming differently for each section and minimizing the configuration disposed inside the cylinder unit.
  • the present invention provides a buffer cylinder device of a cultivator having both ends connected to a main frame connected to a plow part and a tractor, wherein one end is a piston part hingedly connected to the plow part; Includes; a cylinder portion in which oil is charged inside, and a part of the piston portion is slidably inserted therein, wherein the inside of the cylinder portion has a first section having a first inner diameter and an inner diameter larger than the first inner diameter.
  • a shock absorbing cylinder device comprising a second section, wherein the piston unit includes a piston head having an outer diameter smaller than the first inner diameter.
  • a piston rod cover having an extension portion inserted into the cylinder portion through the opening of the cylinder portion; And a fixed cover for coupling the piston rod cover to the cylinder portion, wherein an inner diameter of the extension portion may be an inner diameter of the first section.
  • a flow path may be formed between the outer circumferential surface of the piston head and the inner circumferential surface of the extension part.
  • the width of the flow path may be 0.1mm to 1mm.
  • the length of the first section may be shorter than the length of the second section.
  • the piston head may be located in the first section in order to maintain the plowing position in the cultivation position.
  • An inclined surface connecting the first section and the second section may be formed at a boundary portion between the first section and the second section.
  • the length of the inclined surface may be shorter than the length of the first section.
  • the inclined surface may be formed at the tip of the extension part.
  • the piston head may have an inclined surface formed along an edge of a surface corresponding to the opening of the cylinder part.
  • the main frame connected to the tractor; And a plurality of plows connected to the main frame and each having the plurality of buffer cylinder devices. And a hydraulic line for connecting the plurality of buffer cylinder devices to each other to share hydraulic pressure.
  • the cultivator may include a connection line of the tractor for setting initial pressures of the plurality of buffer cylinder devices; A hydraulic pressure gauge capable of indicating the degree of hydraulic pressure supplied from the connection line; And a hydraulic valve for shutting off the hydraulic pressure.
  • FIG. 1 is a perspective view showing a state in which a buffer cylinder device for a cultivator according to a first embodiment of the present invention is installed in a cultivator.
  • FIG. 2 is a side view showing the buffer cylinder device of the cultivator according to the first embodiment of the present invention.
  • FIG 3 is a cross-sectional view showing the inside of the buffer cylinder device of the cultivator according to the first embodiment of the present invention.
  • FIG 4 is a view showing an operating state of the buffer cylinder device of the tiller according to the first embodiment of the present invention.
  • FIG. 5 is an enlarged view showing a portion E shown in FIG. 4.
  • FIGS. 6A and 6B are diagrams illustrating an example in which the buffer cylinder device of the tiller according to the first embodiment of the present invention is configured as an interlocking type, but configured as a single-acting type and a double-acting type, respectively.
  • FIG. 7 is a cross-sectional view showing the inside of a buffer cylinder device of a cultivator according to a second embodiment of the present invention.
  • first and second may be used to describe various components, but the components should not be limited by the terms. The terms may be used only for the purpose of distinguishing one component from another component. For example, without departing from the scope of the present invention, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element.
  • FIG. 1 is a perspective view showing a state in which a buffer cylinder device for a cultivator is installed in a cultivator according to an embodiment of the present invention
  • FIG. 2 is a side view showing a buffer cylinder device for a cultivator according to an embodiment of the present invention
  • FIG. 3 is a cross-sectional view showing the inside of the buffer cylinder device of the cultivator according to an embodiment of the present invention.
  • the buffer cylinder device 100 of a tiller may have one end hingedly connected to the main frame 20 and the other end hingedly connected to the plow part 30.
  • one end of the shock absorbing cylinder device 100 may be hingedly connected to the first bracket 51 formed on the main frame 20 through the first hinge pin 52.
  • the other end of the buffer cylinder device 100 may be hingedly connected to the second bracket 53 formed on the plow part 30 through the second hinge pin 54.
  • One end of the plow part 30 may be hingedly connected to one end of the main frame 20 through a third hinge pin 31. Accordingly, the plow part 30 may rotate in the vertical direction around the third hinge pin 31.
  • the plow part 30 is provided with crests, moisturizing 41 and crests 43 at the other end.
  • a plurality of plow portions 30 may be provided, and in this case, the plurality of main frames 20 to which each plow portion 30 is hinged may be connected to the other end of each connection frame 15 through welding.
  • a plurality of main frames 20 may be fixed to the connection frame 15 through one of various known fastening structures other than welding.
  • the main frame 20 is a skeleton that is coupled to and supported by various components, and the material may be made of a steel material so as to have a predetermined rigidity.
  • connection frame 15 may be connected to a tractor connection part 11 connected to and towed by a tractor (not shown).
  • the tractor connection part 11 may be detachably connected to the rear of the tractor through a plurality of connection brackets 13a and 13b.
  • the plurality of plows 30 can be cultivated while being towed by the tractor connecting portion 11, the connecting frame 15, and the main frame 20.
  • the plurality of plows 30 can alleviate the impact when colliding with an obstacle (rock, etc.) during cultivation by a corresponding buffer cylinder device 100, respectively.
  • Each of the plurality of shock absorber cylinder devices 100 forms an independent hydraulic circuit and thus operates separately.
  • each of the shock absorbing cylinder devices 100 are all made of the same structure, only one shock absorbing cylinder device 100 will be described below.
  • the shock absorbing cylinder device 100 of the tiller includes a cylinder part 110 and a piston part that is partially slidably inserted into the cylinder part 110.
  • a piston rod cover 112 having an extension part 113 inserted into the cylinder part while supporting a part of the piston part to be slidable, and a fixed cover for fastening the Liston rod cover to the cylinder part ( 120).
  • One end of the cylinder unit 110 may be hingedly connected to the first bracket 51 by a first hinge pin 52.
  • One end of the piston part 130 may be hingedly connected to the second bracket 53 by a second hinge pin 54.
  • the cylinder unit 110 is loaded with oil 150 so that a certain hydraulic pressure can be applied therein.
  • the cylinder unit 110 may be defined by dividing the inside into a plurality of sections.
  • the inside of the cylinder unit 110 is predetermined from the opening 110a through which the piston head 133 of the piston unit 130 enters, along the longitudinal direction of the cylinder unit 110, to the inside of the cylinder unit 110
  • a first section A1 extending up to the length and from the first section A1 to the closed surface 110b of the other end of the cylinder unit 110 may be defined as a second section A2.
  • the length of the first section A1 is the depth required for the plow part 30 to be cultivated, and the position inserted into the soil (hereinafter, referred to as ⁇ cultivation position'') can be maintained, and obstacles (rock, etc.) during cultivation work.
  • ⁇ cultivation position'' the position inserted into the soil
  • obstacles rocks, etc.
  • the initial pressure for maintaining the cultivation position of the plow unit 30 is released and rotates upward so that it can be moved to a position where obstacles can be avoided (hereinafter referred to as'evasion position'). It is preferably made.
  • the first section A1 may correspond to a length of the extension part 113 of the piston rod cover 112 excluding the length of the inclined surface 115.
  • the length of the second section A2 is longer than the length of the first section A1.
  • the inside of the cylinder unit 110 may be divided into a first variable region and a second variable region based on the piston head 133.
  • the first variable region may be defined from the opening 110a of the cylinder part to the rear surface 133b of the piston head
  • the second variable region may be defined from the front surface 133a of the piston head to the closed surface 110b of the cylinder part. I can.
  • the size of the region occupied by each of the first and second variable regions may vary.
  • the first variable region and the second variable region of the cylinder unit 110 may be communicated with each other by a flow path 117 formed between the inner circumferential surface 113a of the first section A1 and the outer circumferential surface 133c of the piston head 133.
  • the flow path 177 may be provided as the outer diameter D3 of the piston head 133 is slightly smaller than the inner diameter D1 of the first section A1.
  • the inner diameter D1 of the first section A1 is the same as the inner diameter of the extension 113 of the piston rod cover 112.
  • the flow path 177 formed between the extension part 113 of the piston rod cover 112 and the piston head 133 may have a substantially ring shape. It is preferable to consider the width of the flow path 117 to be in a position (cultivation position) that maintains the depth at which smooth cultivation work is possible without colliding with obstacles (rocks, etc.) in the ground during cultivation. That is, the width of the flow path 117 is set so that the piston head 133 can be positioned within the first section A1 without leaving the first section A1 under the pressure that the plow section 30 receives at the cultivation position. 2 The degree to which the pressure in the variable region is maintained is desirable.
  • the flow rate transferred from the second section A2 to the first section A1 through the flow path 177 is the piston head 133 to enable smooth tillage work if the plow part 30 does not collide with an obstacle. ) May be insignificant enough to stay in the first section A1.
  • the width of the flow path 177 is preferably formed to be narrow, about 0.1mm to 1mm.
  • the inner diameter D1 of the first section A1 is preferably formed to be smaller than the inner diameter D2 of the second section A2.
  • the inner diameter D2 of the second section A2 is the same as the inner diameter of the cylinder unit 110.
  • the second section (A2) is considered to be able to move from the cultivation position to the avoidance position when the plow unit 30 collides with an obstacle.
  • first section A1 and the second section A2 for example, a portion corresponding to the inclined surface 115 of the extension part 112, the first section A1 and the second section A2 A third section A3 connecting) may be provided.
  • the inclined surface 115 may be formed by the difference in inner diameters D2-D1 between the first and second sections A1 and A2.
  • the length of the inclined surface 115 may be formed shorter than the length of the first section A1.
  • the inclined surface 115 is the difference in the inner diameter of the first and second sections A1 and A2. It is a structure that can be smoothly inserted without being interfered with by a stepped jaw (not shown) that can be formed by.
  • the inclined surface 133d is formed by chamfering the edge of the rear surface 133b of the piston head 133 so that the piston head 133 can be smoothly inserted from the second section A2 to the first section A1. Can be formed.
  • the inclined surfaces 115a and 133d are formed on the extension part 113 and the piston head 133, respectively, but are not limited thereto, and the inclined surface is formed only on one of the extension part 113 and the piston head 133 Of course it is also possible.
  • the opening 110a of the cylinder part 110 may be closed by the piston rod cover 112.
  • the piston rod 131 may slidably penetrate the piston rod cover 112.
  • a plurality of sealing rings 121a and 121b are disposed between the portion of the piston rod cover 112 through which the piston rod 131 passes, that is, between the piston rod cover 112 and the piston rod 131 so that oil leakage does not occur.
  • the extension part 113 is inserted into the cylinder part 110 through the opening 110a of the cylinder part.
  • the O-ring 122a and the packing 122b may be coupled to prevent leakage between the cylinder unit 110 and the extension unit 113.
  • the packing 122b may use a V-shaped packing.
  • the fixing cover 120 covers a part of the piston rod cover 112 that is not inserted into the cylinder unit 110 and at the same time, the piston rod cover 112 is fixed to the cylinder unit 110. It can be fastened to the outside in a screw manner.
  • shock absorber cylinder device 100 of the cultivator according to an embodiment of the present invention will be described with reference to FIGS. 4 and 5.
  • FIG. 4 is a view showing an operating state of the buffer cylinder device of the cultivator according to an embodiment of the present invention
  • FIG. 5 is an enlarged view showing part E shown in FIG. 4.
  • the plow unit 30 when cultivating the cultivated land while the cultivator is connected to the tractor, the plow unit 30 can select the cultivated land while maintaining the cultivation position in the soil.
  • the hydraulic pressure of the first variable region and the second variable region of the cylinder unit 110 are maintained equal to each other, but the pressure acting on the rear surface 133b of the piston head 133 is as much as the thickness of the piston rod 131. Since the area to which the pressure is applied is reduced, the front surface 133a of the piston head 133 receives a greater pressure than the rear surface 133b.
  • the piston head 133 is moved from the first section A1 to the second section A2. ), but stays in the first section A1, so that the plow part 30 is inserted into the soil while maintaining a depth sufficient to perform the cultivation work, so that smooth cultivation work can be achieved.
  • the pressure according to the collision is transferred to the piston part 130 through the plow part 30.
  • the pressure applied to the rear surface 133b of the piston head 133 increases rapidly, and the rear surface 133b of the piston head 133 When) passes through the tip 115a of the inclined surface 115, the pressure applied to the rear surface 133b of the piston head 133 rapidly decreases as the flow path through which the oil passes is expanded.
  • the expanded flow path means a gap between the outer circumferential surface 133c of the piston head and the inner circumferential surface of the second section A2.
  • the piston head 133 smoothly moves from the first section A2 to the second section A2, and the force acting on the plow section 30 by the hydraulic pressure of the buffer cylinder device 100 is
  • the plow portion 30 is significantly lowered so that the plow portion 30 rotates upward by a predetermined angle around the third hinge pin 31 (see FIG. 2) to be in the avoiding position.
  • the piston head 133 since the second variable region inside the cylinder unit 110 gradually becomes narrower than the first variable region, the pressure in the second variable region gradually increases.
  • the plow part 30 rotates downward around the third hinge pin 31 by its own weight. At this time, the piston head 133 moves from the second section A2 to the first section A2, and the oil existing in the first variable region moves to the second variable region.
  • the plow part 30 acts on the front surface 133a of the piston head 133 during normal cultivation work that does not get caught in the obstacle. Since the pressure is greater than the pressure acting on the rear surface 133b, the plow portion 30 is not easily lifted, so that a cultivator can be smoothly selected.
  • the shock absorber cylinder device 100 of a tiller according to an embodiment of the present disclosure, only the piston rod 131 and the piston head 133 are disposed inside the cylinder unit 110, and the first and second inside the cylinder unit Since it can be made of a simple structure in which the inner diameters D1 and D2 of the sections A1 and A2 are formed differently, problems due to aging of the packing member coupled to the conventional piston head can be fundamentally solved.
  • shock absorbing cylinder device 100 is implemented independently, and each of the plurality of shock absorbing cylinder devices shown in FIG. 1 operates independently of hydraulic pressure. However, it is of course possible to implement a plurality of shock absorber cylinder devices in an interlocking manner capable of interlocking hydraulic pressure acting in each cylinder.
  • the interlocking type is a single-acting type (see Fig. 6A) provided with one connecting line 300 to only supply oil from the tractor to the cylinder device, and the connecting lines 300 and 301 to circulate oil in the tractor and the cylinder device. It can be divided into two types of double-acting type (see Fig. 6B).
  • a separate reservoir for example, a tank filled with nitrogen
  • the buffer cylinder device formed in an interlocking manner according to the prior art must distribute the flow rate.
  • the reservoir required in the prior art can be omitted, so that the overall configuration is simplified, making it easy to manufacture and lower the manufacturing cost.
  • 6A is a view showing an example in which the buffer cylinder device of the cultivator according to the first embodiment of the present invention is configured in an interlocking manner, but in a single-acting manner.
  • a plurality of shock absorber cylinder devices 100-1, 100-2, ..., 100-n are connected to each other through a hydraulic line 200 in which the cylinder units 110 are adjacent to each other.
  • only one connection line 300 is provided, and oil can be supplied to each of the buffer cylinder devices 100-1, 100-2, ..., 100-n through the connection line 300.
  • the initial pressure is formed by itself, but the shock absorbing cylinder devices made of an interlocking type are formed by the initial pressure being influenced by the outside. That is, among the interlocking types, the single acting type may set the initial pressure of each cylinder unit 110 through the connection line 300 of the tractor 500. In this case, the connection line 300 may be connected to any one hydraulic line among the plurality of hydraulic lines 200.
  • the cultivator of the present invention may be provided with a mechanical or electronic hydraulic pressure gauge 410 to check the initial pressure formed in each cylinder unit 110 when supplying oil to each cylinder unit 110.
  • the hydraulic gauge 410 may be connected to one of a number of shock absorber cylinder devices.
  • the hydraulic pressure gauge 410 may be connected to one of a plurality of buffer cylinder devices using a separate line, and may be disposed in a driver's seat or the like so that the driver can easily grasp the initial pressure.
  • the cultivator of the present invention may install a hydraulic valve 430 on the connection line 300 in order to adjust the supply amount of oil supplied from the tractor 500 to each buffer cylinder jangchil through the connection line 300.
  • the hydraulic valve 430 may use an electronic check valve in which an opening/closing operation can be controlled by an operator (or driver).
  • a switch (not shown) for operating the hydraulic valve 430 may be disposed in the driver's seat.
  • a locking socket 470 may be installed in one cylinder portion 110 of a plurality of buffer cylinder devices.
  • the locking socket 470 may be released to discharge air in the cylinder unit 110.
  • oil is supplied from the tractor 500 to the plurality of buffer cylinder devices through the connection line 300 after opening the hydraulic valve 430 and the locking socket 470.
  • air inside each cylinder portion of the plurality of buffer cylinder devices is discharged to the outside through the hole to which the lock socket 470 is fastened.
  • the lock socket 470 is locked and the hydraulic valve 430 is continuously opened, and oil is supplied from the tractor 500 to the plurality of buffer cylinder devices, thereby The initial pressure of the shock absorber cylinder device can be formed. In this case, the pressure in each cylinder portion of the plurality of buffer cylinder devices can be grasped through the hydraulic gauge 410.
  • 6B is a view showing an example in which the buffer cylinder device of the tiller according to the first embodiment of the present invention is configured in an interlocking manner, but in a double-acting manner.
  • a plurality of shock absorber cylinder devices 100-1,100-2,...,100-n have cylinder parts 110 adjacent to each other in communication with each other through a hydraulic line 200a.
  • a second connection line 302 for supplying oil from the tractor 500 to each buffer cylinder device 100-1,100-2,...,100-n through the first connection line 301 is provided. Oil can be discharged to the tractor 500 from each of the shock absorber cylinder devices 100-1,100-2,...,100-n.
  • the hydraulic gauge 410 may be installed on the first connection line 301.
  • the hydraulic pressure gauge 410 may be connected to one of a plurality of buffer cylinder devices using a separate line, and may be disposed in a driver's seat or the like so that the driver can easily grasp the initial pressure.
  • a hydraulic valve 430 may be installed in the first connection line 301, and a lock valve 450 may be installed in the second connection line 302.
  • the hydraulic valve 430 and the locking valve 450 may use an electronic check valve.
  • the lock valve 450 is closed and the hydraulic valve 430 is continuously opened, and oil is supplied from the tractor 500 to the plurality of buffer cylinder devices, thereby The initial pressure of the buffer cylinder device can be established. In this case, the pressure in each cylinder portion of the plurality of buffer cylinder devices can be grasped through the hydraulic gauge 410.
  • FIG. 7 is a cross-sectional view showing the inside of a buffer cylinder device of a cultivator according to a second embodiment of the present invention.
  • the buffer cylinder device 100a of the cultivator according to the second embodiment of the present invention has the same configuration as the buffer cylinder device 100 of the cultivator according to the first embodiment of the present invention described above, and is partially different. Can be formed. Therefore, in describing each configuration of the safety device 100a shown in FIG. 7, the same member number as each configuration of the safety device 100 is assigned to the same configuration as the above-described safety device 100, and detailed description Is omitted, and a different configuration from the above-described safety device 100 will be described.
  • the cylinder part 110 has an inner circumferential surface 113a corresponding to the first section A1 of the cylinder part 110. It can protrude with the same thickness toward the central axis.
  • the cylinder unit 110 has an extension portion ( 113) can be formed.
  • the extension part 113 may be integrally formed with the cylinder part 110.
  • the safety device 100a of the tiller omits the piston rod cover 112 (see FIG. 3)
  • the opening 110a of the cylinder unit 110 is fixed to the cover 120 ') can be closed.
  • the piston rod 131 may slidably penetrate the fixing cover 120 ′.
  • a plurality of sealing rings 121a and 121b may be disposed in a portion of the fixing cover 120 ′ through which the piston rod 131 passes so that oil leakage does not occur.
  • a sealing member is disposed between the cylinder unit 110 and the fixed cover 120 ′ to prevent oil leakage.
  • the safety device 100a of the cultivator according to the second embodiment of the present invention has been described as being configured as an independent type, but is not limited thereto, and as with the aforementioned safety device 100a, a plurality of safety devices are provided through a plurality of hydraulic lines.
  • a plurality of safety devices are provided through a plurality of hydraulic lines.
  • the present invention relates to a shock absorber cylinder device for a cultivator used by being connected to a tractor.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Soil Sciences (AREA)
  • Environmental Sciences (AREA)
  • Lifting Devices For Agricultural Implements (AREA)
  • Soil Working Implements (AREA)

Abstract

Un dispositif de cylindre absorbant les chocs d'un cultivateur est divulgué, les deux extrémités du dispositif de cylindre absorbant les chocs étant reliées à un cadre principal relié à une partie de labourage et à un tracteur. Le dispositif de cylindre absorbant les chocs selon l'invention comprend : une partie piston dont une extrémité est accouplée par charnière à la partie de labourage ; et une partie cylindre dont l'intérieur est rempli d'huile et dans laquelle une partie de la partie piston est insérée de manière coulissante. L'intérieur de la partie cylindre comprend une première section ayant un premier diamètre interne et une seconde section ayant un diamètre interne qui est plus grand que le premier diamètre interne. La partie piston est pourvue d'une tête de piston ayant un diamètre externe qui est plus petit que le premier diamètre interne.
PCT/KR2019/017426 2019-11-19 2019-12-11 Dispositif de cylindre absorbant les chocs et cultivateur équipé d'une pluralité desdits dispositifs de cylindre absorbant les chocs WO2021100961A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR20190148491 2019-11-19
KR10-2019-0148491 2019-11-19

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WO2021100961A1 true WO2021100961A1 (fr) 2021-05-27

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100520112B1 (ko) * 2003-05-09 2005-10-11 용인송담대학 댐퍼
KR101117769B1 (ko) * 2009-12-31 2012-03-21 박재현 트랙터용 쟁기장치
US20120292059A1 (en) * 2011-05-19 2012-11-22 Kuhn-Huard S.A. Semi-mounted monowheel plough with adjustable working width
US20180054955A1 (en) * 2016-08-29 2018-03-01 Troy Oliver Agriculture System and Method
KR20190064385A (ko) * 2017-11-30 2019-06-10 박기혁 경작기의 안전장치

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100520112B1 (ko) * 2003-05-09 2005-10-11 용인송담대학 댐퍼
KR101117769B1 (ko) * 2009-12-31 2012-03-21 박재현 트랙터용 쟁기장치
US20120292059A1 (en) * 2011-05-19 2012-11-22 Kuhn-Huard S.A. Semi-mounted monowheel plough with adjustable working width
US20180054955A1 (en) * 2016-08-29 2018-03-01 Troy Oliver Agriculture System and Method
KR20190064385A (ko) * 2017-11-30 2019-06-10 박기혁 경작기의 안전장치

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